Recently, we warned against writing your name and address on luggage tags, since burglars might figure you’re not home. Instead, we said, you might use smart labels from HomingPIN. These can be tracked worldwide by the airports’ own system.

After writing that, we heard from a reader with a low tech solution: Write only your name and email address or name and phone number. He points out that he wants the finder to reach him where he is now, not at his home. (We have some smart readers.)